Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Subdomain vs Main Domain Penalties
-
We have a client who's main root.com domain is currently penalized by Google, but the subdomain.root.com is appearing very well. We're stumped - any ideas why?
-
Extremely helpful insight Marie - I will be contacting you directly soon.
It appears that the duplicate content you've found (and other dupe content we've found) is actually our content that other sites have repurposed. Seems like Google has determined our site as the culprit, so this would be an issue we need to address - the only thought that comes to mind right away is adding an 'Author' tag, then start working on what appears to be a hefty cleanup project, something that looks like you are an expert on and will most likely be working directly with you in the near future!
The 2nd level pages that have little content and lots of links are 'noindex,follow' but I'm nervous about the number of these tags throughout our site which could be seen as spammy to a search engine. Of note, the 2nd level page section you have found ranks quite well since it is a subdomain which is interesting. Our suspicion is that since we made the 404 (200 success) error that Google detected on Dec. 9, 2011, we have been on some sort of Google 'watch-list' and any little thing we do incorrectly that they find, we immediately are penalized.
The homepage description of our company is reused on industry directories that we are listed on, so perhaps we must consider re-writing our description to be unique, and adding more content to the homepage would be a good thing and is certainly easily doable.
-
You have some significant duplicate content issues with www.ides.com. There is not a lot of text on your home page and what is there is duplicated in many places across the web.
Your second level pages are all just links. I would noindex, follow these.
I looked at two inner pages:
http://plastics.ides.com/generics/6/alphamethylstyrene-ams - extremely thin content
Here is a Google search for text I copied from the styrene-acrylonitrile page. There are 247 pages that use this opening sentence.
My guess is that this is indeed a Panda issue. But please know that I've only just taken a quick look so I can't say for sure. What doesn't make sense is that your traffic drops don't happen on Panda dates which really should be the case if it was Panda.
Panda definitely can affect just one part of a site (such as a root and not a subdomain). I would work on making these pages completely unique and also noindexing the thin pages.
-
Thank you Marie,
We 301 redirect any traffic going to root.com to www.root.com, and any content that we moved from www.root.com to subdomain.root.com has been completely removed from www.root.com. There doesn't appear to be any duplicate content between the two. There is some duplicate content that we treat with canonicals on subdomain.root.com - very small portion of total pages (less than 1%).
As for your other questions, no warnings in WMT. Robots txt file looks clean, canonicals are in place correctly, and no accidental non-indexing that we know of.
Here is the actual site that might help to look at:
http://www.ides.com
http://plastics.ides.com/materials
http://www.ides.com/robots.txt -
I think the answer here depends on whether or not you have actually been penalized and why the site is dropping out of the SERPS. Do you have a warning in WMT? If not, then you're probably not penalized.
It's unlikely to be Penguin because Penguin did not refresh lately. Similarly, Panda did not refresh on the days you mentioned. So, it's not likely a penalty but rather some type of site structure issue.
Is there duplicate content between the subdomain and the root? If so, then Google will choose one as the owner and not show the other prominently. Any issues with robots.txt? Are the canonicals set correctly? Any chance of accidental noindexing?
-
Subdomains and root domains are not necessarily always owned by the same person and therefore will not always be given the same penalties. As Scott mentioned, they are seen as different sites.
e.g. If I create a new WordPress account and create me.wordpress.com and then build a black hat site which gets penalized, this is not going to affect you.wordpress.com or www.wordpress.com.
-
Thank you all for your insight - good stuff, but still stumped.
Here's everything we know that might help point out why the main domain (ie www.root.com) was penalized by Google. We redirect root.com to www.root.com with a 301 redirect, and it is setup this way in Google Webmaster Tools too.
December 9, 2011 - the site's 404 error page was incorrectly setup as a 200, resulting in a quick bloat of 1 million plus pages. The website dropped from Google immediately. The error page was correctly setup 2 days later. The site still appeared in Google's index via site: query. However the site didn't reappear in Google's SERPs until May 2, 2012.
October 25, 2012 - the website again drops from Google for an unknown reason. We then moved a significant portion of content from www.root.com to subdomain.root.com. Pages from subdomain.root.com began appearing within 3 days as high they appeared previously on Google. From December 9, 2011 throughout this entire time we were correcting any errors reported in Google Webmaster Tools on a daily basis.
February 26, 2013 - The website yet again is dropped from Google, the subdomain.root.com continues to appear and rank well.
Due to moving most of the content from www.root.com to subdomain.root.com, the index for www.root.com from October 2012 dropped from 142,000 slowly to an average of 21,400 ending at today's 4,230. However this index count fluctuates greatly every few days (probably due to moving content from www.root.com to subdomain.root.com).
Of note, the site is NOT a content farm, but legitimate unique technical content that is hosted for hundreds of clients.
Again any ideas are most welcome!
-
From my understanding subdomains are considered completely separate from root domains unless you have a 301 redirect or conical that tells search engines you want them to consider the root or the subdomain to be the same; for example, http://www.yourdomain.com (subdomain) points to http://yourdomain.com
Therefore, you could have a subdomain out rank a root domain, or in your case a root domain penalized and the subdomain continue to rank well. The fact that they share an IP address shouldn't affect all the domains under that IP as many websites are on shared hosting which use the same IP address.
-
This isn't necessarily surprising. Penalties and negative ranking algorithms can be applied at a page level, a subdomain level, a root domain level, etc.
For example, HubPages used subdomains to help escape from a Panda slap.
Another example: Google placed a manual penalty on a single page of BBC's website.
-
hmmm...
do they point to the same IP address?
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Subdomain or subfolder?
Hello, We are working on a new site. The idea of the site is to have an ecommerce shop, but the homepage will be a content page, basically a blog page.
Technical SEO | | pinder325
My developer wants to have the blog (home) page on a subdomain, so blog.example.com, because it will be easier to make a nice content page this way, and the the rest of the site will just be on the root domain (example.com). I'm just worried that this will be bad for our SEO efforts. I've always thought it was better to use a sub folder rather than a subdomain. If we get links to the content on the subdomain, will the link juice flow to the shop, on the root domain? What are your thoughts?0 -
Personalized Content Vs. Cloaking
Hi Moz Community, I have a question about personalization of content, can we serve personalized content without being penalized for serving different content to robots vs. users? If content starts in the same initial state for all users, including crawlers, is it safe to assume there should be no impact on SEO because personalization will not happen for anyone until there is some interaction? Thanks,
Technical SEO | | znotes0 -
Old domain to new domain
Hi, A website on server A is no longer required. The owner has redirected some URLS of this website (via plugin) to his new website on server B -but not all URLS. So when I use COMMAND site:website A , I see a mixture of redirected URLS and not redirected URLS.Therefore two websites are still being indexed in some form and causing duplication. However, weirdly when I crawl with Screaming Frog I only see one URL which is 301 redirected to the new website. I would have thought I'd see lots of URLs which hadn't been redirected. How come it is different to using the site:command? Anyway, how do I move to the new website completely without the old one being indexed anymore. I thought I knew this but have read so many blogs I've confused myself! Should I: Redirect all URLS via the HTACESS file on old website on server A? There are lots of pages indexed so a lot of URLs. What if I miss some? or Point the old domain via DNS to server B and do the redirects in website B HTaccess file? This seems more sensible but does this method still retain the website rankings? Thanks for any help
Technical SEO | | AL123al0 -
"Fourth-level" subdomains. Any negative impact compared with regular "third-level" subdomains?
Hey moz New client has a site that uses: subdomains ("third-level" stuff like location.business.com) and; "fourth-level" subdomains (location.parent.business.com) Are these fourth-level addresses at risk of being treated differently than the other subdomains? Screaming Frog, for example, doesn't return these fourth-level addresses when doing a crawl for business.com except in the External tab. But maybe I'm just configuring the crawls incorrectly. These addresses rank, but I'm worried that we're losing some link juice along the way. Any thoughts would be appreciated!
Technical SEO | | jamesm5i0 -
How to increase your Domain Authority
Hi Guys, Can someone please provide some pointers on how to best increase your Domain Authority?? Thanks Gareth
Technical SEO | | GAZ090 -
Domain authority and keyword difficulty
I know there are too many variables for a certain answer, however do people take their domain authority into account when using keyword difficulty tool? I have a new domain which only has a score of seven at the moment. When using the keyword searching tool what is the maximum difficulty level keywords people would target initially? Obviously I would seek to increase the difficulty of the words over time but to start off its a hard choice between keywords which can be ranked for in a reasonable period of time and the keywords which are getting enough traffic to make the effort worthwhile.
Technical SEO | | Grumpy_Carl0 -
Any way around buying hosting for an old domain to 301 redirect to a new domain?
Howdy. I have just read this QA thread, so I think I have my answer. But I'm going to ask anyway! Basically DomainA.com is being retired, and DomainB.com is going to be launched. We're going to have to redirect numerous URLs from DomainA.com to DomainB.com. I think the way to go about this is to continue paying for hosting for DomainA.com, serving a .htaccess from that hosting account, and then hosting DomainB.com separately. Anybody know of a way to avoid paying for hosting a .htaccess file on DomainA.com? Thanks!
Technical SEO | | SamTurri0 -
301 Redirect vs Domain Alias
We have hundreds of domains which are either alternate spelling of our primary domain or close keyword names we didn't want our competitor to get before us. The primary domain is running on a dedicated Windows server running IIS6 and set to a static IP. Since it is a static IP and not using host headers any domain pointed to the static IP will immediately show the contents of the site, however the domain will be whatever was typed. Which could be the primary domain or an alias. Two concerns. First, is it possible that Google would penalize us for the alias domains or dilute our primary domain "juice"? Second, we need to properly track traffic from the alias domains. We could make unique content for those performing well and sell or let expire those that are sending no traffic. It's not my goal to use the alias domains to artificially pump up our primary domain. We have them for spelling errors and direct traffic. What is the best practice for handling one or both of these issues?
Technical SEO | | briankb0